Route · ORD → SEA · 2020–2025 BTS data
Chicago to Seattle
The ORD–SEA corridor (Chicago, IL → Seattle, WA) runs ahead of the national average, served by 13 carriers across roughly 1,721 miles.
Data updated 2026-06-13
- 79.9%
- On-time
- +0.9 pts
- vs US avg
- 68 min
- Delay when late
- 27,916
- Flights
Cancelled
1.0%
Best Month
Feb 2024 93%
Worst Month
Dec 2025 49%
Distance
1,721 mi
Carriers
13
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 384 | 195 | 8 | 2 | DL,AS,AA,UA |
| Nov 2025 | 391 | 141 | 15 | 3 | UA,DL,AA,AS |
| Oct 2025 | 496 | 125 | 3 | 2 | AA,AS,UA,DL |
| Sep 2025 | 509 | 80 | 2 | 1 | UA,DL,AA,AS |
| Aug 2025 | 602 | 186 | 12 | 0 | AA,UA,AS,DL |
| Jul 2025 | 622 | 205 | 8 | 1 | AA,AS,DL,UA |
| Jun 2025 | 571 | 176 | 3 | 1 | AA,AS,DL,UA |
| May 2025 | 537 | 90 | 2 | 0 | AA,AS,UA,DL |
| Apr 2025 | 425 | 77 | 2 | 0 | DL,UA,AA,AS |
| Mar 2025 | 331 | 90 | 3 | 0 | AA,AS,UA,DL |
| Feb 2025 | 259 | 71 | 2 | 0 | AA,AS,UA,DL |
| Jan 2025 | 284 | 69 | 1 | 1 | AA,AS,UA,DL |
| Dec 2024 | 366 | 73 | 2 | 1 | AA,AS,DL,UA |
| Nov 2024 | 356 | 51 | 0 | 0 | UA,AS,DL,AA |
| Oct 2024 | 435 | 55 | 1 | 0 | UA,AS,DL,AA |
| Sep 2024 | 485 | 78 | 1 | 0 | UA,AA,AS,DL |
| Aug 2024 | 552 | 172 | 1 | 3 | AA,AS,DL,UA |
| Jul 2024 | 575 | 174 | 11 | 0 | AA,AS,DL,UA |
| Jun 2024 | 523 | 209 | 6 | 0 | AA,AS,DL,UA |
| May 2024 | 465 | 143 | 5 | 1 | AA,AS,DL,UA |
| Apr 2024 | 399 | 59 | 0 | 0 | AA,AS,DL,UA |
| Mar 2024 | 311 | 48 | 1 | 1 | AA,AS,DL,UA |
| Feb 2024 | 247 | 18 | 0 | 1 | AA,AS,DL,UA |
| Jan 2024 | 271 | 64 | 19 | 0 | AA,AS,DL,UA |
Cancellation Rate
1.0%
108 of 10,396 flights
Diversion Rate
0.2%
18 of 10,396 flights
Explore origin & destination
On-time and delay data for the airports this route connects.
ORD - Chicago
Full on-time, delay-cause, and seasonal performance for Chicago, IL.
Origin airport →SEA - Seattle
Full on-time, delay-cause, and seasonal performance for Seattle, WA.
Destination airport →Compare the two airports
See ORD and SEA side by side on delays, cancellations, and reliability.
Open comparison tool →Similar routes
Other BTS-tracked routes with comparable performance or trip length to ORD–SEA.
Routes with a similar on-time rate
What the Data Says About ORD to SEA
27,916 tracked flights put the ORD to SEA pairing (Chicago to Seattle) at a 79.9% on-time rate, squarely in line with the wider network. Delays that do occur run 67.8 minutes on average. Across the 1,721-mile route and its 13 carriers, the trailing 24 months show 1.0% cancelled and 0.2% diverted (10,396 flights sampled).
The monthly split is wide on this route: Feb 2024 posted the strongest performance at 93% on-time, while Dec 2025 came in at just 49% - a 44-point swing worth factoring into travel timing.
Frequently Asked Questions
How often are flights delayed from ORD to SEA? ▼
What is the cancellation rate for ORD to SEA? ▼
How far is the flight from ORD to SEA? ▼
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Flight Guides
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Data source
Data Source: Bureau of Transportation Statistics (BTS), On-Time Performance Data. Statistics reflect cumulative performance across all available reporting periods.
Read our methodology - how this data is sourced, computed, and verified.
Every figure on PlainFlights is rendered directly from BTS On-Time Performance data, no number is typed in by an editor. This page aggregates this specific route's on-time performance and monthly trend, live from the dataset. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.